C35 Small Group Transactions Each Taking What They Needed.

Niu Da asked, "Why do I only have one supply bag? I gave you a Crystal Essence Stone, what do I need this for?"

Lo Yu asked, "Crystal Essence Stone? You take a picture and I'll take a look. "

After Niu Da took a screenshot, it was indeed a Crystal Essence Stone.

This was the prerequisite to unlocking the Mercenary Technology